Holosun HE515GT Rifle Sight Green Multi-Reticle, TitaniumHolosun HE515GT Rifle Sight Green Multi Reticle, Titanium 20mm diameter optic; Titanium housing with durable finish; Green Multi Reticle System (2 MOA dot, 65 MOA circle); 12 brightness settings (10 daylight, 2 night vision compatible); Shake Awake technology for power efficiency; Solar Failsafe for extended battery operation; Up to 50,000 hour battery life (setting 6); 0. 5 MOA adjustment per click; Windage and elevation travel range of + 50 MOA;